Walter Willet is a professor of medicine at the Harvard Medical School, a professor of epidemiology and nutrition at the Harvard School of Public Health, and the author of Eat, Drink, and Be Healthy: The Harvard Medical School Guide to Healthy Eating.
He was also a principal investigator for Harvard's Nurses' Health Study, one of the longest and most extensive research studies ever conducted on women's health.
In this interview, Willet explains how he thinks health coaches help patients make meaningful changes, and how those changes can dramatically improve their health outcomes.
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Walter Willett’s food fight The Boston Globe
From a 2013 PBS Frontline interview with Walter Willet:
"...our studies have shown that we could prevent about 82 percent of heart attacks, about 70 percent of strokes, over 90 percent of type 2 diabetes, and over 70 percent of colon cancer, with the right dietary choices as part of a health lifestyle. The best drugs can reduce heart attacks by about 20 or 30 percent, yet we put almost all of our resources into promoting drugs rather than healthy lifestyle and nutrition."